本文介绍了Javascript:四舍五入的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试将数字四舍五入到100.
I'm trying to round a number the 100.
示例:
1340 should become 1400
1301 should become 1400
和
298 should become 300
200 should stay 200
我了解 Math.round
,但是它不能四舍五入到100.
I know about Math.round
but it doesn't round to the 100.
我该怎么做?
推荐答案
尝试一下...
function roundUp(value) {
return (~~((value + 99) / 100) * 100);
}
这将舍入到下一个百位-101将返回200.
That will round up to the next hundred - 101 will return 200.
jsFiddle示例- http://jsfiddle.net/johncmolyneux/r8ryd/
jsFiddle example - http://jsfiddle.net/johncmolyneux/r8ryd/
打开控制台以查看结果.
Open your console to see the results.
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